Now, we learn the formation of large numbers. Let us build and complete the number tower by observing the pattern of numbers.

**Formation of large numbers**

Now, we learn the formation of large numbers. Let
us build and complete the number tower by observing the pattern of numbers.

We can observe that in every row the smallest number
column has an additional zero compared to the previous row. You have read in lower classes about place
value system. In this system (which was invented in India and spread to other countries!),
the number 10 plays a very important role.

It is shown in the following table.

**Note**

As the numbers get large, it is difficult
to keep track of the number of digits and the place value for each digit. Wherever
possible, we use names like lakh and crore instead of writing so many zeros. However,
we can write exact values of large numbers too, if needed.

While each new row gives a number 10 times bigger,
what happens if we skip and go 2 rows below. Numbers would be 100 times bigger.

For example, 1000 = 100 times 10, or One Thousand
has “hundred tens” in it.

**Try these**

1. Give
3 examples where the number of things counted by you would be a 5 digit number or
more.

**Solution:**

• No.of people in
Town

• No. of sq.feet
area of forest

• Distance between two
oceans

2. How
many hundreds are there in 10 lakh?

**Solution:**

= 1000000 / 100

= 10000 hundreds

3. There
are ten lakh people in a district. What would be the population of 10 such districts?

**Solution:**

People in district = 10,00,000

for 10 districts = ?

= 10,00,000 × 10 = 1,00,00,000 = 1 Crore

4. The
Government spends rupees 2 crores for education in a particular district every month.
What would be its expenditure over 10 months?

**Solution:**

2 × 10 crores = 20 crores

5. 10 lakh candidates write the Public
Exam this year. If each exam centre is allotted with 1000 candidates. How many exam
centres would be needed?

**Solution:**

Total No. of students = 10 lakh

for 1 centre = 1000 students

Total No. of centres = 10,00,000 / 1000

= 1000 centres

Tags : Numbers | Term 1 Chapter 1 | 6th Maths , 6th Maths : Term 1 Unit 1 : Numbers

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6th Maths : Term 1 Unit 1 : Numbers : Formation of large numbers | Numbers | Term 1 Chapter 1 | 6th Maths

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